He's doing much better, this is yesterday's update:
He was very lethargic in the morning, I realised this was because of the heater being at 86! I quickly did a 25% water change with cool water, which seemed to perk him up. He's been very alert and responsive today, he comes up to the glass out of curiosity, when I come to check on him but quickly hides. :)
He's been swimming around today and doesn't sit around for long periods. He also gobbled up 4 live bloodworms quite happily in the evening. He's actually blown a few bubbles too! I changed 25% of his water in the evening as well.
Although the raw pink and red have not gone from his body, he seems to be developing a nice green colour on him which was there only at his tail before. Now it is halfway up his body.. I'll put up some pics for you tomorrow. His "lumpy" scales really bother me though, they don't look raised but like bumps. I wonder if its because of the burns?
Anyway, I hope he continues in this trend and gets healthy.